Calibration of Elastic-Plastic Material Model for Tire Shreds

In this paper we present the development of an elastic-plastic material model for tire shreds material. In particular, our aim is to use large scale triaxial tests to calibrate the elastic and elastic-plastic model for this anisotropic material. The main effort is focused on the dynamic behavior of tire shred material and in particular the energy dissipation characteristics during dynamic (seismic) loading. This paper presents results of a material model calibration using wave propagation tests on a triaxially loaded tire shred specimen. The immediate goal of the presented work is the creation of a verified and validated elastic-plastic material model that will then be used in numerical assessment of seismic behavior of bridge abutments. The validation procedure will ultimately include simulations of two bridge abutments made of tire shreds performed using a large centrifuge facility at UC Davis.